House Robber
public class Solution { public int rob(int[] nums) { int result=0; int rob=0; int unrob=0; for(int i=0;i<nums.length;i++){ int temp=unrob; unrob=max(rob,unrob); rob=temp+nums[i]; } return max(unrob,rob); } public int max(int a,int b){ return a>b?a:b; } }